+ continue integrating "sp-funcs" by Juergen Pfeifer (incomplete).
+ modify declaration of cur_term when broken-linker is used, but
enable-reentrant is not, to match pre-5.7 (report by Charles Wilson).
+ add configure script --enable-sp-funcs to enable the new set of
extended functions.
+ start integrating patches by Juergen Pfeifer:
+ add extended functions which specify the SCREEN pointer for several
curses functions which use the global SP (these are incomplete;
some internals work is needed to complete these).
+ add special cases to configure script for MinGW port.
+ correct some ifdef's needed for the broken-linker configuration.
+ make debugging library's $BAUDRATE feature work for termcap
interface.
+ make $NCURSES_NO_PADDING feature work for termcap interface (prompted
by comment on FreeBSD mailing list).
+ add screen.mlterm terminfo entry -TD
+ improve mlterm and mlterm+pcfkeys terminfo entries -TD
+ add new functions to lib_trace.c to setup mutex's for the _tracef()
calls within the ncurses library.
+ for the reentrant model, move _nc_tputs_trace and _nc_outchars into
the SCREEN.
+ start modifying test/worm.c to provide threading demo (incomplete).
+ separated ifdef's for some BSD-related symbols in tset.c, to make
it compile on LynxOS (report by Greg Gemmer).
